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1 | /** @file\r | |
2 | HOB Library.\r | |
3 | \r | |
4 | Copyright (c) 2006 - 2007, Intel Corporation<BR>\r | |
5 | All rights reserved. This program and the accompanying materials\r | |
6 | are licensed and made available under the terms and conditions of the BSD License\r | |
7 | which accompanies this distribution. The full text of the license may be found at\r | |
8 | http://opensource.org/licenses/bsd-license.php\r | |
9 | \r | |
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
12 | \r | |
13 | Module Name: HobLib.c\r | |
14 | \r | |
15 | **/\r | |
16 | \r | |
17 | \r | |
18 | \r | |
19 | //\r | |
20 | // Include common header file for this module.\r | |
21 | //\r | |
22 | #include "CommonHeader.h"\r | |
23 | \r | |
24 | STATIC VOID *mHobList = NULL;\r | |
25 | \r | |
26 | /**\r | |
27 | The constructor function caches the pointer to HOB list.\r | |
28 | \r | |
29 | The constructor function gets the start address of HOB list from system configuration table.\r | |
30 | It will ASSERT() if that operation fails and it will always return EFI_SUCCESS. \r | |
31 | \r | |
32 | @param ImageHandle The firmware allocated handle for the EFI image.\r | |
33 | @param SystemTable A pointer to the EFI System Table.\r | |
34 | \r | |
35 | @retval EFI_SUCCESS The constructor always returns EFI_SUCCESS.\r | |
36 | \r | |
37 | **/\r | |
38 | EFI_STATUS\r | |
39 | EFIAPI\r | |
40 | HobLibConstructor (\r | |
41 | IN EFI_HANDLE ImageHandle,\r | |
42 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
43 | )\r | |
44 | {\r | |
45 | EFI_STATUS Status;\r | |
46 | \r | |
47 | Status = EfiGetSystemConfigurationTable (&gEfiHobListGuid, &mHobList);\r | |
48 | ASSERT_EFI_ERROR (Status);\r | |
49 | ASSERT (mHobList != NULL);\r | |
50 | return Status;\r | |
51 | }\r | |
52 | \r | |
53 | /**\r | |
54 | Returns the pointer to the HOB list.\r | |
55 | \r | |
56 | This function returns the pointer to first HOB in the list.\r | |
57 | \r | |
58 | @return The pointer to the HOB list.\r | |
59 | \r | |
60 | **/\r | |
61 | VOID *\r | |
62 | EFIAPI\r | |
63 | GetHobList (\r | |
64 | VOID\r | |
65 | )\r | |
66 | {\r | |
67 | return mHobList;\r | |
68 | }\r | |
69 | \r | |
70 | /**\r | |
71 | Returns the next instance of a HOB type from the starting HOB.\r | |
72 | \r | |
73 | This function searches the first instance of a HOB type from the starting HOB pointer. \r | |
74 | If there does not exist such HOB type from the starting HOB pointer, it will return NULL.\r | |
75 | In contrast with macro GET_NEXT_HOB(), this function does not skip the starting HOB pointer\r | |
76 | unconditionally: it returns HobStart back if HobStart itself meets the requirement;\r | |
77 | caller is required to use GET_NEXT_HOB() if it wishes to skip current HobStart.\r | |
78 | If HobStart is NULL, then ASSERT().\r | |
79 | \r | |
80 | @param Type The HOB type to return.\r | |
81 | @param HobStart The starting HOB pointer to search from.\r | |
82 | \r | |
83 | @return The next instance of a HOB type from the starting HOB.\r | |
84 | \r | |
85 | **/\r | |
86 | VOID *\r | |
87 | EFIAPI\r | |
88 | GetNextHob (\r | |
89 | IN UINT16 Type,\r | |
90 | IN CONST VOID *HobStart\r | |
91 | )\r | |
92 | {\r | |
93 | EFI_PEI_HOB_POINTERS Hob;\r | |
94 | \r | |
95 | ASSERT (HobStart != NULL);\r | |
96 | \r | |
97 | Hob.Raw = (UINT8 *) HobStart;\r | |
98 | //\r | |
99 | // Parse the HOB list until end of list or matching type is found.\r | |
100 | //\r | |
101 | while (!END_OF_HOB_LIST (Hob)) {\r | |
102 | if (Hob.Header->HobType == Type) {\r | |
103 | return Hob.Raw;\r | |
104 | }\r | |
105 | Hob.Raw = GET_NEXT_HOB (Hob);\r | |
106 | }\r | |
107 | return NULL;\r | |
108 | }\r | |
109 | \r | |
110 | /**\r | |
111 | Returns the first instance of a HOB type among the whole HOB list.\r | |
112 | \r | |
113 | This function searches the first instance of a HOB type among the whole HOB list. \r | |
114 | If there does not exist such HOB type in the HOB list, it will return NULL. \r | |
115 | \r | |
116 | @param Type The HOB type to return.\r | |
117 | \r | |
118 | @return The next instance of a HOB type from the starting HOB.\r | |
119 | \r | |
120 | **/\r | |
121 | VOID *\r | |
122 | EFIAPI\r | |
123 | GetFirstHob (\r | |
124 | IN UINT16 Type\r | |
125 | )\r | |
126 | {\r | |
127 | VOID *HobList;\r | |
128 | \r | |
129 | HobList = GetHobList ();\r | |
130 | return GetNextHob (Type, HobList);\r | |
131 | }\r | |
132 | \r | |
133 | /**\r | |
134 | This function searches the first instance of a HOB from the starting HOB pointer. \r | |
135 | Such HOB should satisfy two conditions: \r | |
136 | its HOB type is EFI_HOB_TYPE_GUID_EXTENSION and its GUID Name equals to the input Guid. \r | |
137 | If there does not exist such HOB from the starting HOB pointer, it will return NULL. \r | |
138 | Caller is required to apply GET_GUID_HOB_DATA () and GET_GUID_HOB_DATA_SIZE ()\r | |
139 | to extract the data section and its size info respectively.\r | |
140 | In contrast with macro GET_NEXT_HOB(), this function does not skip the starting HOB pointer\r | |
141 | unconditionally: it returns HobStart back if HobStart itself meets the requirement;\r | |
142 | caller is required to use GET_NEXT_HOB() if it wishes to skip current HobStart.\r | |
143 | If Guid is NULL, then ASSERT().\r | |
144 | If HobStart is NULL, then ASSERT().\r | |
145 | \r | |
146 | @param Guid The GUID to match with in the HOB list.\r | |
147 | @param HobStart A pointer to a Guid.\r | |
148 | \r | |
149 | @return The next instance of the matched GUID HOB from the starting HOB.\r | |
150 | \r | |
151 | **/\r | |
152 | VOID *\r | |
153 | EFIAPI\r | |
154 | GetNextGuidHob (\r | |
155 | IN CONST EFI_GUID *Guid,\r | |
156 | IN CONST VOID *HobStart\r | |
157 | )\r | |
158 | {\r | |
159 | EFI_PEI_HOB_POINTERS GuidHob;\r | |
160 | \r | |
161 | GuidHob.Raw = (UINT8 *) HobStart;\r | |
162 | while ((GuidHob.Raw = GetNextHob (EFI_HOB_TYPE_GUID_EXTENSION, GuidHob.Raw)) != NULL) {\r | |
163 | if (CompareGuid (Guid, &GuidHob.Guid->Name)) {\r | |
164 | break;\r | |
165 | }\r | |
166 | GuidHob.Raw = GET_NEXT_HOB (GuidHob);\r | |
167 | }\r | |
168 | return GuidHob.Raw;\r | |
169 | }\r | |
170 | \r | |
171 | /**\r | |
172 | This function searches the first instance of a HOB among the whole HOB list. \r | |
173 | Such HOB should satisfy two conditions:\r | |
174 | its HOB type is EFI_HOB_TYPE_GUID_EXTENSION and its GUID Name equals to the input Guid.\r | |
175 | If there does not exist such HOB from the starting HOB pointer, it will return NULL.\r | |
176 | Caller is required to apply GET_GUID_HOB_DATA () and GET_GUID_HOB_DATA_SIZE ()\r | |
177 | to extract the data section and its size info respectively.\r | |
178 | If Guid is NULL, then ASSERT().\r | |
179 | \r | |
180 | @param Guid The GUID to match with in the HOB list.\r | |
181 | \r | |
182 | @return The first instance of the matched GUID HOB among the whole HOB list.\r | |
183 | \r | |
184 | **/\r | |
185 | VOID *\r | |
186 | EFIAPI\r | |
187 | GetFirstGuidHob (\r | |
188 | IN CONST EFI_GUID *Guid\r | |
189 | )\r | |
190 | {\r | |
191 | VOID *HobList;\r | |
192 | \r | |
193 | HobList = GetHobList ();\r | |
194 | return GetNextGuidHob (Guid, HobList);\r | |
195 | }\r | |
196 | \r | |
197 | /**\r | |
198 | Get the Boot Mode from the HOB list.\r | |
199 | \r | |
200 | This function returns the system boot mode information from the \r | |
201 | PHIT HOB in HOB list.\r | |
202 | \r | |
203 | @param VOID\r | |
204 | \r | |
205 | @return The Boot Mode.\r | |
206 | \r | |
207 | **/\r | |
208 | EFI_BOOT_MODE\r | |
209 | EFIAPI\r | |
210 | GetBootModeHob (\r | |
211 | VOID\r | |
212 | )\r | |
213 | {\r | |
214 | EFI_HOB_HANDOFF_INFO_TABLE *HandOffHob;\r | |
215 | \r | |
216 | HandOffHob = (EFI_HOB_HANDOFF_INFO_TABLE *) GetHobList ();\r | |
217 | \r | |
218 | return HandOffHob->BootMode;\r | |
219 | }\r | |
220 | \r | |
221 | /**\r | |
222 | Builds a HOB for a loaded PE32 module.\r | |
223 | \r | |
224 | This function builds a HOB for a loaded PE32 module.\r | |
225 | It can only be invoked during PEI phase;\r | |
226 | for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.\r | |
227 | If ModuleName is NULL, then ASSERT().\r | |
228 | If there is no additional space for HOB creation, then ASSERT().\r | |
229 | \r | |
230 | @param ModuleName The GUID File Name of the module.\r | |
231 | @param MemoryAllocationModule The 64 bit physical address of the module.\r | |
232 | @param ModuleLength The length of the module in bytes.\r | |
233 | @param EntryPoint The 64 bit physical address of the module's entry point.\r | |
234 | \r | |
235 | **/\r | |
236 | VOID\r | |
237 | EFIAPI\r | |
238 | BuildModuleHob (\r | |
239 | IN CONST EFI_GUID *ModuleName,\r | |
240 | IN EFI_PHYSICAL_ADDRESS MemoryAllocationModule,\r | |
241 | IN UINT64 ModuleLength,\r | |
242 | IN EFI_PHYSICAL_ADDRESS EntryPoint\r | |
243 | )\r | |
244 | {\r | |
245 | //\r | |
246 | // PEI HOB is read only for DXE phase\r | |
247 | //\r | |
248 | ASSERT (FALSE);\r | |
249 | }\r | |
250 | \r | |
251 | /**\r | |
252 | Builds a HOB that describes a chunk of system memory.\r | |
253 | \r | |
254 | This function builds a HOB that describes a chunk of system memory.\r | |
255 | It can only be invoked during PEI phase;\r | |
256 | for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.\r | |
257 | If there is no additional space for HOB creation, then ASSERT().\r | |
258 | \r | |
259 | @param ResourceType The type of resource described by this HOB.\r | |
260 | @param ResourceAttribute The resource attributes of the memory described by this HOB.\r | |
261 | @param PhysicalStart The 64 bit physical address of memory described by this HOB.\r | |
262 | @param NumberOfBytes The length of the memory described by this HOB in bytes.\r | |
263 | \r | |
264 | **/\r | |
265 | VOID\r | |
266 | EFIAPI\r | |
267 | BuildResourceDescriptorHob (\r | |
268 | IN EFI_RESOURCE_TYPE ResourceType,\r | |
269 | IN EFI_RESOURCE_ATTRIBUTE_TYPE ResourceAttribute,\r | |
270 | IN EFI_PHYSICAL_ADDRESS PhysicalStart,\r | |
271 | IN UINT64 NumberOfBytes\r | |
272 | )\r | |
273 | {\r | |
274 | //\r | |
275 | // PEI HOB is read only for DXE phase\r | |
276 | //\r | |
277 | ASSERT (FALSE);\r | |
278 | }\r | |
279 | \r | |
280 | /**\r | |
281 | Builds a GUID HOB with a certain data length.\r | |
282 | \r | |
283 | This function builds a customized HOB tagged with a GUID for identification \r | |
284 | and returns the start address of GUID HOB data so that caller can fill the customized data. \r | |
285 | The HOB Header and Name field is already stripped.\r | |
286 | It can only be invoked during PEI phase;\r | |
287 | for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.\r | |
288 | If Guid is NULL, then ASSERT().\r | |
289 | If there is no additional space for HOB creation, then ASSERT().\r | |
290 | If DataLength >= (0x10000 - sizeof (EFI_HOB_GUID_TYPE)), then ASSERT().\r | |
291 | \r | |
292 | @param Guid The GUID to tag the customized HOB.\r | |
293 | @param DataLength The size of the data payload for the GUID HOB.\r | |
294 | \r | |
295 | @return The start address of GUID HOB data.\r | |
296 | \r | |
297 | **/\r | |
298 | VOID *\r | |
299 | EFIAPI\r | |
300 | BuildGuidHob (\r | |
301 | IN CONST EFI_GUID *Guid,\r | |
302 | IN UINTN DataLength\r | |
303 | )\r | |
304 | {\r | |
305 | //\r | |
306 | // PEI HOB is read only for DXE phase\r | |
307 | //\r | |
308 | ASSERT (FALSE);\r | |
309 | return NULL;\r | |
310 | }\r | |
311 | \r | |
312 | /**\r | |
313 | Copies a data buffer to a newly-built HOB.\r | |
314 | \r | |
315 | This function builds a customized HOB tagged with a GUID for identification,\r | |
316 | copies the input data to the HOB data field and returns the start address of the GUID HOB data.\r | |
317 | The HOB Header and Name field is already stripped.\r | |
318 | It can only be invoked during PEI phase;\r | |
319 | for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.\r | |
320 | If Guid is NULL, then ASSERT().\r | |
321 | If Data is NULL and DataLength > 0, then ASSERT().\r | |
322 | If there is no additional space for HOB creation, then ASSERT().\r | |
323 | If DataLength >= (0x10000 - sizeof (EFI_HOB_GUID_TYPE)), then ASSERT().\r | |
324 | \r | |
325 | @param Guid The GUID to tag the customized HOB.\r | |
326 | @param Data The data to be copied into the data field of the GUID HOB.\r | |
327 | @param DataLength The size of the data payload for the GUID HOB.\r | |
328 | \r | |
329 | @return The start address of GUID HOB data.\r | |
330 | \r | |
331 | **/\r | |
332 | VOID *\r | |
333 | EFIAPI\r | |
334 | BuildGuidDataHob (\r | |
335 | IN CONST EFI_GUID *Guid,\r | |
336 | IN VOID *Data,\r | |
337 | IN UINTN DataLength\r | |
338 | )\r | |
339 | {\r | |
340 | //\r | |
341 | // PEI HOB is read only for DXE phase\r | |
342 | //\r | |
343 | ASSERT (FALSE);\r | |
344 | return NULL;\r | |
345 | }\r | |
346 | \r | |
347 | /**\r | |
348 | Builds a Firmware Volume HOB.\r | |
349 | \r | |
350 | This function builds a Firmware Volume HOB.\r | |
351 | It can only be invoked during PEI phase;\r | |
352 | for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.\r | |
353 | If there is no additional space for HOB creation, then ASSERT().\r | |
354 | \r | |
355 | @param BaseAddress The base address of the Firmware Volume.\r | |
356 | @param Length The size of the Firmware Volume in bytes.\r | |
357 | \r | |
358 | **/\r | |
359 | VOID\r | |
360 | EFIAPI\r | |
361 | BuildFvHob (\r | |
362 | IN EFI_PHYSICAL_ADDRESS BaseAddress,\r | |
363 | IN UINT64 Length\r | |
364 | )\r | |
365 | {\r | |
366 | //\r | |
367 | // PEI HOB is read only for DXE phase\r | |
368 | //\r | |
369 | ASSERT (FALSE);\r | |
370 | }\r | |
371 | \r | |
372 | /**\r | |
373 | Builds a Capsule Volume HOB.\r | |
374 | \r | |
375 | This function builds a Capsule Volume HOB.\r | |
376 | It can only be invoked during PEI phase;\r | |
377 | for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.\r | |
378 | If there is no additional space for HOB creation, then ASSERT().\r | |
379 | \r | |
380 | @param BaseAddress The base address of the Capsule Volume.\r | |
381 | @param Length The size of the Capsule Volume in bytes.\r | |
382 | \r | |
383 | **/\r | |
384 | VOID\r | |
385 | EFIAPI\r | |
386 | BuildCvHob (\r | |
387 | IN EFI_PHYSICAL_ADDRESS BaseAddress,\r | |
388 | IN UINT64 Length\r | |
389 | )\r | |
390 | {\r | |
391 | //\r | |
392 | // PEI HOB is read only for DXE phase\r | |
393 | //\r | |
394 | ASSERT (FALSE);\r | |
395 | }\r | |
396 | \r | |
397 | /**\r | |
398 | Builds a HOB for the CPU.\r | |
399 | \r | |
400 | This function builds a HOB for the CPU.\r | |
401 | It can only be invoked during PEI phase;\r | |
402 | for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.\r | |
403 | If there is no additional space for HOB creation, then ASSERT().\r | |
404 | \r | |
405 | @param SizeOfMemorySpace The maximum physical memory addressability of the processor.\r | |
406 | @param SizeOfIoSpace The maximum physical I/O addressability of the processor.\r | |
407 | \r | |
408 | **/\r | |
409 | VOID\r | |
410 | EFIAPI\r | |
411 | BuildCpuHob (\r | |
412 | IN UINT8 SizeOfMemorySpace,\r | |
413 | IN UINT8 SizeOfIoSpace\r | |
414 | )\r | |
415 | {\r | |
416 | //\r | |
417 | // PEI HOB is read only for DXE phase\r | |
418 | //\r | |
419 | ASSERT (FALSE);\r | |
420 | }\r | |
421 | \r | |
422 | /**\r | |
423 | Builds a HOB for the Stack.\r | |
424 | \r | |
425 | This function builds a HOB for the stack.\r | |
426 | It can only be invoked during PEI phase;\r | |
427 | for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.\r | |
428 | If there is no additional space for HOB creation, then ASSERT().\r | |
429 | \r | |
430 | @param BaseAddress The 64 bit physical address of the Stack.\r | |
431 | @param Length The length of the stack in bytes.\r | |
432 | \r | |
433 | **/\r | |
434 | VOID\r | |
435 | EFIAPI\r | |
436 | BuildStackHob (\r | |
437 | IN EFI_PHYSICAL_ADDRESS BaseAddress,\r | |
438 | IN UINT64 Length\r | |
439 | )\r | |
440 | {\r | |
441 | //\r | |
442 | // PEI HOB is read only for DXE phase\r | |
443 | //\r | |
444 | ASSERT (FALSE);\r | |
445 | }\r | |
446 | \r | |
447 | /**\r | |
448 | Builds a HOB for the BSP store.\r | |
449 | \r | |
450 | This function builds a HOB for BSP store.\r | |
451 | It can only be invoked during PEI phase;\r | |
452 | for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.\r | |
453 | If there is no additional space for HOB creation, then ASSERT().\r | |
454 | \r | |
455 | @param BaseAddress The 64 bit physical address of the BSP.\r | |
456 | @param Length The length of the BSP store in bytes.\r | |
457 | @param MemoryType Type of memory allocated by this HOB.\r | |
458 | \r | |
459 | **/\r | |
460 | VOID\r | |
461 | EFIAPI\r | |
462 | BuildBspStoreHob (\r | |
463 | IN EFI_PHYSICAL_ADDRESS BaseAddress,\r | |
464 | IN UINT64 Length,\r | |
465 | IN EFI_MEMORY_TYPE MemoryType\r | |
466 | )\r | |
467 | {\r | |
468 | //\r | |
469 | // PEI HOB is read only for DXE phase\r | |
470 | //\r | |
471 | ASSERT (FALSE);\r | |
472 | }\r | |
473 | \r | |
474 | /**\r | |
475 | Builds a HOB for the memory allocation.\r | |
476 | \r | |
477 | This function builds a HOB for the memory allocation.\r | |
478 | It can only be invoked during PEI phase;\r | |
479 | for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.\r | |
480 | If there is no additional space for HOB creation, then ASSERT().\r | |
481 | \r | |
482 | @param BaseAddress The 64 bit physical address of the memory.\r | |
483 | @param Length The length of the memory allocation in bytes.\r | |
484 | @param MemoryType Type of memory allocated by this HOB.\r | |
485 | \r | |
486 | **/\r | |
487 | VOID\r | |
488 | EFIAPI\r | |
489 | BuildMemoryAllocationHob (\r | |
490 | IN EFI_PHYSICAL_ADDRESS BaseAddress,\r | |
491 | IN UINT64 Length,\r | |
492 | IN EFI_MEMORY_TYPE MemoryType\r | |
493 | )\r | |
494 | {\r | |
495 | //\r | |
496 | // PEI HOB is read only for DXE phase\r | |
497 | //\r | |
498 | ASSERT (FALSE);\r | |
499 | }\r |